I found this site just because I was curious to know. If I were wanting to purchase a firearm on a private FTF basis I would want to check just for my own personal best interest if the gun was stolen. If I were to be stopped and the police officer ran the s/n and it was I would be going to jail. Here is a web site that anyone can run a firearm serial number to find out. http://www.hotgunz.com/search.php I hope this comes in handy for someone.